Vol. 14

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues
2010-05-05

Compact Quintuple-Mode UWB Bandpass Filter with Good Out-of-Band Rejection

By Hong-Wei Deng, Yong-Jiu Zhao, Xue-Shun Zhang, Lu Zhang, and Si-Ping Gao
Progress In Electromagnetics Research Letters, Vol. 14, 111-117, 2010
doi:10.2528/PIERL10030912

Abstract

In this paper, a novel compact quintuple-mode UWB bandpass filter (BPF) with sharp rejection skirt and wide upper-stopband performances is realized using stub-loaded multiple-mode resonator (MMR). The proposed resonator is formed by attaching two pairs of circular impedance-stepped open stubs in shunt and a pair of short-circuited stubs to high impedance microstrip line. By simply adjusting the radius of circular impedance-stepped open stubs and the lengths of short-circuited stubs, the first five resonant modes of the resonator can be roughly allocated within the 3.1--10.6 GHz UWB band meanwhile the high resonant modes in the upper-stopband can be suppressed. The short stubs in pairs can generate two transmission zeros near the lower and upper cut-off frequencies, leading to sharper rejection skirt outside the desired passband. Finally, a quintuple-mode UWB BPF is designed and fabricated, and the measured results demonstrate the feasibility of the design process.

Citation


Hong-Wei Deng, Yong-Jiu Zhao, Xue-Shun Zhang, Lu Zhang, and Si-Ping Gao, "Compact Quintuple-Mode UWB Bandpass Filter with Good Out-of-Band Rejection," Progress In Electromagnetics Research Letters, Vol. 14, 111-117, 2010.
doi:10.2528/PIERL10030912
http://www.jpier.org/PIERL/pier.php?paper=10030912

References


    1. Ishida, H. and K. Araki, "Design and analysis of UWB bandpass filter," Proc. IEEE Topical Conf. Wireless Comm. Tech., 457-458, Oct. 2003.

    2. Hsu, C. L., F.-C. Hsu, and J. T. Kuo, "Microstrip bandpass ¯lters for ultra-wideband (UWB) wireless communications," IEEE MTT-S Int. Dig., 679-682, Jun. 2005.

    3. Chen, H. and Y.-X. Zhang, "A novel and compact UWB bandpass filter using microstrip fork-form resonators," Progress In Electromagnetics Research, Vol. 77, 273-280, 2007.
    doi:10.2528/PIER07082302

    4. Naghshvarian-Jahromi, M. and M. Tayarani, "Miniature planar UWB bandpass filters with circular slots in ground," Progress In Electromagnetics Research Letters, Vol. 3, 83-97, 2008.

    5. An, J., G.-M. Wang, W.-D. Zeng, and L.-X. Ma, "UWB filter using defected ground structure of von koch fractal shape slot," Progress In Electromagnetics Research Letters, Vol. 6, 61-66, 2009.
    doi:10.2528/PIERL08121309

    6. Hsiao, P.-Y. and R.-M. Weng, "Compact open-loop UWB filter with notched band," Progress In Electromagnetics Research Letters, Vol. 7, 149-159, 2009.
    doi:10.2528/PIERL09022501

    7. Zhu, L., S. Sun, and W. Menzel, "Ultra-wideband (UWB) bandpass filters using multiple-mode resonator," IEEE Microw. Wireless Compon. Lett., Vol. 15, No. 11, 796-798, Nov. 2005.

    8. Sun, S. and L. Zhu, "Capacitive-ended interdigital coupled lines for UWB bandpass filters with improved out-of-band performances," IEEE Microw. Wireless Compon. Lett., Vol. 16, No. 8, 440-442, Aug. 2006.
    doi:10.1109/LMWC.2006.879492

    9. Chiou, Y.-C., J.-T. Kuo, and E. Cheng, "Broadband quasi-Chebyshev bandpass filters with multimode stepped-impedance resonators (SIRs)," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 8, 3352-3358, Aug. 2006.
    doi:10.1109/TMTT.2006.879131

    10. Wong, S. W. and L. Zhu, "EBG-embedded multiple-mode resonator for UWB bandpass filter with improved upper-stopband performance," IEEE Microw. Wireless Compon. Lett., Vol. 17, No. 6, 421-423, Jun. 2007.
    doi:10.1109/LMWC.2007.897788

    11. Wong, S. W. and L. Zhu, "Quadruple-mode UWB bandpass filter with improved out-of-band rejection," IEEE Microw. Wireless Compon. Lett., Vol. 19, No. 3, 152-154, Mar. 2009.
    doi:10.1109/LMWC.2009.2013735

    12. Yao, B. Y., Y. G. Zhou, Q. S. Cao, and Y. C. Chen, "Compact UWB bandpass filter with improved upper-stopband performance," IEEE Microw. Wireless Compon. Lett., Vol. 19, No. 1, 27-29, Jan. 2009.
    doi:10.1109/LMWC.2008.2008558